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A147098
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Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1000-1000-1111 pattern in any orientation.
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0
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1, 1, 1, 1, 3, 7, 13, 29, 143, 539, 2419, 11799, 70509, 422003, 3669313, 30560805, 384390343
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